1023051503 has 4 divisors (see below), whose sum is σ = 1032612840. Its totient is φ = 1013490168.

The previous prime is 1023051493. The next prime is 1023051541. The reversal of 1023051503 is 3051503201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1023051503 - 2⁴ = 1023051487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023051583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4780508 + ... + 4780721.

It is an arithmetic number, because the mean of its divisors is an integer number (258153210).

Almost surely, 2^1023051503 is an apocalyptic number.

1023051503 is a deficient number, since it is larger than the sum of its proper divisors (9561337).

1023051503 is an equidigital number, since it uses as much as digits as its factorization.

1023051503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9561336.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1023051503 is about 31985.1763009054. The cubic root of 1023051503 is about 1007.6255377027.

Adding to 1023051503 its reverse (3051503201), we get a palindrome (4074554704).

The spelling of 1023051503 in words is "one billion, twenty-three million, fifty-one thousand, five hundred three".